de.lmu.ifi.dbs.elki.distance.distancefunction.colorhistogram

Class RGBHistogramQuadraticDistanceFunction

java.lang.Object

de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractNumberVectorDistanceFunction

de.lmu.ifi.dbs.elki.distance.distancefunction.MatrixWeightedQuadraticDistanceFunction

de.lmu.ifi.dbs.elki.distance.distancefunction.colorhistogram.RGBHistogramQuadraticDistanceFunction

All Implemented Interfaces:

DistanceFunction<NumberVector>, Norm<NumberVector>, NumberVectorDistanceFunction<NumberVector>, PrimitiveDistanceFunction<NumberVector>

@Reference(authors="J. Hafner, H. S. Sawhney, W. Equits, M. Flickner, W. Niblack",
           title="Efficient Color Histogram Indexing for Quadratic Form Distance Functions",
           booktitle="IEEE Trans. on Pattern Analysis and Machine Intelligence 17(7)",
           url="https://doi.org/10.1109/34.391417",
           bibkey="DBLP:journals/pami/HafnerSEFN95")
public class RGBHistogramQuadraticDistanceFunction
extends MatrixWeightedQuadraticDistanceFunction

Distance function for RGB color histograms based on a quadratic form and color similarity.

Reference:

J. Hafner, H. S. Sawhney, W. Equits, M. Flickner, W. Niblack
Efficient Color Histogram Indexing for Quadratic Form Distance Functions
IEEE Trans. on Pattern Analysis and Machine Intelligence 17(7)

Since:

0.3

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RGBHistogramQuadraticDistanceFunction.Parameterizer Parameterization class.

Field Summary

Fields inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.MatrixWeightedQuadraticDistanceFunction

weightMatrix

Constructor Summary

Constructors

Constructor and Description
RGBHistogramQuadraticDistanceFunction(int bpp) Constructor.

Method Summary

Modifier and Type	Method and Description
static double[][]	computeWeightMatrix(int bpp) Compute weight matrix for a RGB color histogram

Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.MatrixWeightedQuadraticDistanceFunction

distance, equals, getInputTypeRestriction, hashCode, isSquared, norm

Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractNumberVectorDistanceFunction

dimensionality, dimensionality, dimensionality, dimensionality, dimensionality, dimensionality, dimensionality, dimensionality

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface de.lmu.ifi.dbs.elki.distance.distancefunction.PrimitiveDistanceFunction

instantiate

Methods inherited from interface de.lmu.ifi.dbs.elki.distance.distancefunction.DistanceFunction

isMetric, isSymmetric

Constructor Detail

RGBHistogramQuadraticDistanceFunction

public RGBHistogramQuadraticDistanceFunction(int bpp)

Constructor.

Parameters:

bpp - bins per plane.

Method Detail

computeWeightMatrix

public static double[][] computeWeightMatrix(int bpp)

Compute weight matrix for a RGB color histogram

Parameters:

bpp - bins per plane

Returns:

Weight matrix